Starting to talk about a second service pack for Windows 7 when Microsoft has yet to offer the public any details on SP1 might seem like jumping the gun, but then again, it appears that what may be ridiculous for the world is just planning ahead for the company. Reports indicate that the software giant is already exploring the development of Windows 7 SP2, at just three months after the general availability of the operating system, and with SP1 still kept under a tight lid. And after all, Microsoft ran tests involving Service Pack 1
well before Windows 7 was released to manufacturing on July 22nd, 2009.
Full read here: Windows 7 SP2 (Service Pack 2) Already in Planning - Microsoft has not confirmed or offered any details on SP1 or SP2 for Windows 7 - Softpedia